WO2019214330A1

WO2019214330A1 - Drilling fluid mixing, cleaning and stirring device, and control method therefor

Info

Publication number: WO2019214330A1
Application number: PCT/CN2019/077197
Authority: WO
Inventors: 程宗伟; 程正午阳; 李舒婷; 程琬婷; 李成清; 李家明; 王剑锋; 王晓蒙; 朱勇; 鲁运来; 张延军; 袁维运; 王强
Original assignee: 四川中创石油设备有限公司
Priority date: 2018-05-10
Filing date: 2019-03-06
Publication date: 2019-11-14

Abstract

A drilling fluid mixing, cleaning and stirring device and a control method therefor, said stirring device comprises a driving transmission mechanism, a base (1) and a liquid feeding and stirring mechanism, the liquid feeding and stirring mechanism comprises a mixing transmission device (4) and a stirring rod (5); the mixing transmission device (4) comprises a liquid inlet pipe (6) and a rotation mechanism (7); the rotation mechanism (7) comprises an inner rotation body (9) and an outer rotation body (10); the inner rotation body (9) is rotatably connected to the outer rotation body (10) by means of a steel ball (19) or a bearing (26); the outer rotation body (10) is provided with a first liquid inlet (12); the first liquid inlet (12) is connected to the liquid inlet pipe (6); a second liquid inlet (13) is provided in a side wall of the inner rotation body (9); the second liquid inlet (13) is a truncated cone-shaped liquid inlet; and the narrow end of the second liquid inlet (13) faces toward the outer side of the inner rotation body (9). The control method realizes three functions including stirring, mixing and cleaning. The present invention has the advantages of good stirring effect, convenience for cleaning sand and energy saving.

Description

Drilling fluid mixing cleaning stirring device and control method thereof

Technical field

The invention relates to the technical field of drilling engineering, in particular to a drilling fluid mixing cleaning stirring device and a control method thereof.

Background technique

Mixing and mixing of drilling fluids is an indispensable process in solid control systems. The mixing and agitation is mainly to prevent the drilling fluid from being precipitated. When the drilling fluid density is too small (large), the drilling fluid is agitated after the drilling fluid is aggravated (diluted), so that the density of the drilling fluid in the tank is substantially constant. Generally, the stirring impeller only has a stirring effect, and the tank bottom sand can not be thoroughly stirred and mixed, so that the stirring effect is not satisfactory; in addition, the tank body in the prior art is generally a rectangular parallelepiped, and the drilling fluid in the corner cannot be stirred and mixed for a long time. Can not participate in the entire drilling fluid cycle operation, will gradually precipitate over a long period of time, bringing great difficulties to sand cleaning after drilling.

The removal of the silt in the tank is also a very difficult problem. After the completion of the well, it is necessary to carry out the sand cleaning manually. Although the mud gun has a cleaning effect, the effect is too small to basically clean, so the existing drilling team Almost no mud blasting is used for sand cleaning. Since the drilling fluid is very hard after precipitation, sometimes it needs to be removed with steel brazing, so the labor intensity of the employees is very large.

The utility model patent with the application number CN201720166926.7 discloses a nozzle impeller. This nozzle impeller basically solves the above problems, but the process is troublesome and the number of nozzles is limited. This nozzle impeller follows the conventional impeller style, and the blade passes through the mounting plate. Connected to the infusion tube, the liquid on the plate is not stirred, and the impeller conveying capacity is limited. Because the nozzle is directly welded to the infusion tube, if the impeller rotates quickly, the water jet can not be formed because the speed is too fast. The rotation speed is slow, and the stirring effect on the liquid is not good. This nozzle impeller is not solved.

The utility model patent with the application number CN201720226751.4 discloses a drilling fluid mixing and cleaning device, wherein the working condition is that the liquid exhibits a swirling liquid flow during mixing, and the liquid exhibits a fountain-like liquid flow during mixing, the flow direction of the liquid and the liquid spray The direction of the outflow is the same, the impact of the liquid prevents the rotation of the impeller, the impeller needs more torque to achieve the work, and the output power of the motor is large.

In addition, some drilling fluids need to be used to aid drilling during drilling. The uniform mixing of the various components in the drilling fluid allows the drilling fluid to perform better. The existing stirring device is often directly connected to the motor shaft through the power transmission shaft, and the power transmission structure has a single function. The mixed liquid is supplied to the stirring device for stirring, and the various liquids are directly injected into the stirring tank by providing a special liquid inlet on the stirring tank. When the liquid is directly injected into the stirring device for stirring, the liquid is not subjected to preliminary mixing. During the stirring process, the uneven mixing of the liquid may result in uneven mixing of the subsequent mixed liquid, and the mixing effect is not good.

The drilling fluid mixing device disclosed in the utility model patent No. ZL201720186632.0 basically solves the above problems, but because the center line of the liquid inlet end and the transmission center line intersect, the liquid feeding effect is not good, and the liquid of the inner rotating body is inflow. The center line of the hole intersects with the center line of the inner rotating body, and the inner rotating body has a certain thickness. When the inner rotating body rotates, the wall thickness of the drilling hole blocks the entry of the liquid, and also does not cut a large particle in the drilling fluid. effect.

Summary of the invention

In order to solve the problems existing in the prior art, the present invention provides a drilling fluid mixing and cleaning stirring device. The liquid feeding effect of the invention is good, and the forward rotation and the reverse rotation of the inner rotating body are favorable for the liquid to enter and carry out the liquid. A preliminary shearing effect, the mixing effect is good, and the invention solves the problem that the entire hybrid transmission device can be scrapped after the steel ball is stuck, and the invention realizes the automatic removal of the grit in the tank body and enhances the clearing. The sand effect reduces the input of labor cost, and at the same time, reduces the torque of the impeller during mixing, thereby reducing the power saving energy of the motor.

In order to achieve the above object, the technical solution adopted by the present invention is:

A drilling fluid mixing cleaning stirring device comprises a base, a driving transmission mechanism and an inlet stirring mechanism, the driving transmission mechanism comprising an explosion-proof motor and a gearbox fixedly mounted on an upper surface of the base, the output end of the explosion-proof motor and The input end of the gearbox is connected, and the output end of the gearbox is connected to the input end of the liquid inlet stirring mechanism through the base.

The liquid inlet stirring mechanism includes a mixing transmission device and a stirring rod, the mixing transmission device includes an inlet pipe, a rotating mechanism and an outlet pipe, and the rotating mechanism includes an inner rotating body and an outer rotating body, and the inner rotating body and The outer rotating body is rotatably connected by a steel ball or a bearing, and a top of the inner rotating body is provided with a mounting hole for connecting an output end of the gearbox, and the outer rotating body is provided with a plurality of first liquid inlets, A liquid inlet is connected to the liquid inlet pipe through a connecting elbow, and a plurality of second liquid inlets are evenly opened on the side wall of the inner rotating body, which can enhance the liquid feeding efficiency in the inner rotating body, and the inner rotating body A cavity is provided between the outer side wall and the inner side wall of the outer rotating body, which further increases the liquid feeding rate in the inner rotating body, thereby increasing the mixing and stirring rate, and the second liquid inlet port is a truncated cone shape. a structure, and the small opening end of the second liquid inlet port faces the outer side of the inner rotating body, the axis of the second liquid inlet port intersects the axis of the inner rotating body, and the lower end of the inner rotating body is fixedly connected to the liquid discharging pipe, the liquid discharging The tube is connected to the stirring by a flange .

When the drilling fluid mixing and cleaning stirring device of the invention is in operation, the rotating torque of the inner rotating body is input from the explosion-proof motor and the gearbox on the base through the mounting hole at the top of the inner rotating body, and the inner rotating body can be rotated inside the outer body through the steel ball or the bearing Rotating, the liquid enters the outer rotating body from the inlet pipe through the connecting elbow, and the inner rotating body rotates in the outer rotating body, and the liquid input from the outer rotating body can enter from the second liquid inlet of the inner rotating body In the interior of the rotating body, the second liquid inlet of the inner rotating body is a trough-shaped liquid inlet, and the small opening end of the second liquid inlet faces the outer side of the inner rotating body, the axis of the second liquid inlet and the inner rotating body The axis intersects, and the inner rotating body has a certain thickness. Since the second liquid inlet has a truncated cone structure, an annular sharp edge structure is formed at the mouth wall of the second liquid inlet, which can play a role in drilling the drilling fluid. While accelerating the flow of the drilling fluid, it is also possible to shear and mix large particles in the drilling fluid, and, due to the formation of a ring-shaped sharp edge structure, regardless of the inner rotating body Whether the clockwise rotation or the counterclockwise rotation is favorable for the external liquid to enter the inside, and both can shear the liquid, and the above structure can effectively improve the liquid mixing effect.

Preferably, the top and bottom of the outer rotating body are respectively provided with an upper steel ball groove seat and a lower steel ball groove seat, and the inner side wall of the upper steel ball groove seat and the inner side wall of the lower steel ball groove seat are respectively opened. a steel ball groove, and the steel ball groove on the upper steel ball socket extends to the top surface of the upper steel ball seat, and the steel ball groove on the lower steel ball seat extends to the bottom surface of the lower steel ball seat a steel ball is mounted in the steel ball groove, and the inner rotating body and the outer rotating body are rotatably connected by the steel ball, and the upper steel ball groove seat is provided with an upper steel ball groove gland at the upper end, and the upper steel ball groove The gland is connected to the upper steel ball socket by bolts, the upper end of the upper steel ball groove gland is detachably fastened with a first mounting seat, and the lower end of the lower steel ball groove seat is provided with a lower steel ball groove gland. The lower steel ball groove gland and the lower steel ball socket are connected by bolts.

A top steel ball groove seat and a lower steel ball groove seat are respectively arranged at the top and the bottom of the outer rotating body, and the steel ball groove on the upper steel ball groove seat and the lower steel ball groove seat respectively extend to the top surface of the upper steel ball groove seat and the lower steel The bottom surface of the ball socket seat is respectively provided with a steel ball groove gland and a lower steel ball groove gland on the upper steel ball groove seat and the lower steel ball groove seat, and is fixed by bolts, and the inner rotating body and the outer rotating body appear card. In the case of death, the fixing bolts can be removed, and the upper steel ball groove seat and the upper steel ball groove gland or the lower steel ball groove seat and the lower steel ball groove gland are separated, and the steel ball is exposed, which can be conveniently The steel ball is directly taken out from the steel ball groove, which effectively solves the problem that the entire hybrid transmission device is scrapped after the steel ball is stuck.

Preferably, the outer side wall of the outer rotating body is provided with an oil pipe communicating with the steel ball groove.

The lubricating oil can be injected into the steel ball groove through the oil pipe provided, and the steel ball in the steel ball groove is lubricated to facilitate the relative rotation between the inner rotating body and the outer rotating body.

Preferably, the top and the bottom of the outer rotating body are respectively provided with an upper bearing seat and a lower bearing seat, and the upper bearing seat and the lower bearing housing are respectively provided with bearings, and the inner rotating body and the outer rotating body pass the The upper end of the upper bearing seat is provided with an upper bearing gland, and the upper bearing gland is connected with the upper bearing seat by a bolt, and the upper end of the upper bearing gland is detachably fastened with a second mounting seat, An upper bearing pressure cap is disposed between the bearing gland and the inner rotating body, the upper bearing pressing cap is rotatably sleeved on the inner rotating body and located above the bearing; and the lower bearing end is provided with a lower bearing pressure a cover, the lower bearing gland and the lower bearing block are connected by bolts.

The inner rotating body and the outer rotating body can also be connected by a bearing, and the working principle is the same as that when the steel ball is used.

Preferably, the stirring rod includes a first inlet shaft tube, and the first inlet shaft tube is mounted with a plurality of sets of impellers, and the first inlet shaft tube has a plurality of spray slits uniformly distributed on the tube wall, The angle between the direction of the discharge of the slit and the axial direction of the first inlet shaft tube is an acute angle.

By setting the spray seam, the way of setting the nozzle in the past is changed, and the effect of cleaning the sand sink can be better achieved. In addition, the nozzle is easily trapped in the grit at the bottom of the tank, so that the torque required for the impeller to rotate increases, resulting in energy. Waste, and the set spray seam is to open the hole directly on the first inlet shaft tube, so the drilling fluid injection impeller can be easily realized without increasing the torque; by setting the discharge direction of the spray seam and the first The inlet shaft tube forms an acute angle at the tangential direction of the spray seam position, thus ensuring that the spray seam has a certain inclination angle on the horizontal surface when the liquid is discharged, and when the device performs the stirring work, the spray seam is started first, and the spray seam is started. The spray liquid forms a certain reaction force, and assists the driving of the first liquid inlet shaft tube to rotate in the opposite direction, thereby improving the starting efficiency of the stirring function of the device. At this time, the direction in which the sprayed liquid is ejected is the same as the direction in which the impeller blades are inclined, and the impeller blades are Below the working surface, the impeller blades press the liquid against the bottom of the tank, causing the drilling fluid to form a swirling liquid flow, reducing the torque of the impeller; when the device performs the mixing function, this The direction in which the sprayed liquid is ejected is the same as the direction in which the impeller blades are inclined. The underside of the impeller blades is the working surface. The impeller blades press the liquid against the bottom of the tank, so that the drilling fluid forms a swirling liquid flow, which reduces the torque of the impeller; When the device performs the cleaning function, there is no drilling fluid in the tank at this time, the mixing transmission valve is opened and the first liquid inlet shaft tube is activated, and the liquid sprayed by the spray seam forms a covering surface, which increases the cleaning area of the tank bottom. The cleaning effect is greatly improved. At this time, the direction of rotation of the impeller is consistent with the direction in which the liquid is ejected from the spout, further enhancing the impact force of the liquid ejected by the spout, so that the deposition of the bottom of the tank is maximally cleaned, and the spray in this patent The sprayed liquid of the slot impeller is the same as the tilt direction of the impeller. The working condition is that the liquid exhibits a swirling liquid flow during the stirring function, and the liquid exhibits a swirling liquid flow when mixed, and the liquid exhibits a fountain-like liquid flow during cleaning. The design reduces the torque of the impeller, which can reduce the power saving energy of the motor; by setting the upper edge of the inner hole higher than the upper edge of the outer hole The lower edge of the inner hole is higher than the lower edge of the outer hole, so that a downward inclined surface is formed at the spray seam, so that the downward impact force of the spray seam can be enhanced, and the sand sinking is further improved. effectiveness.

Preferably, the impeller includes a blade fixed at one end to the outer wall of the first inlet shaft tube, and the free end of the blade is connected with a blade shroud, and the blade shroud has a square structure.

Preferably, a plurality of the blades are circumferentially distributed on the outer wall of the first inlet shaft tube, and the blades are disposed in a "J" shape or an "S" shape.

The blade edge plate is added to the free end edge of the blade. During the operation of the impeller, the blade coaming plate can enhance the conveying ability of the drilling fluid up or down, and enhance the mixing ability during the stirring process; at the same time, set the blade to "J" The "type" or "S" type further enhances the strength of the blade and improves the stability of the overall operation of the device.

Preferably, the stirring rod comprises a second liquid inlet shaft tube, the second liquid inlet shaft tube is evenly mounted with a plurality of sets of hollow impellers, and the second liquid inlet shaft tube is in communication with the hollow impeller, the hollow impeller a hollow blade having one end fixed to an outer wall of the second inlet shaft tube, the free end of the hollow blade being connected with the blade shroud, and the lower portion of the hollow blade is provided with a liquid discharge port which is consistent with the inclination direction of the hollow impeller A plurality of the hollow blades are evenly distributed circumferentially on the outer wall of the second inlet shaft tube.

Preferably, the second inlet shaft tube is evenly mounted with a plurality of sets of auxiliary impellers, the secondary impeller is disposed above the hollow impeller, and the auxiliary impeller includes one end fixed on the outer wall of the second inlet shaft tube a sub-blade, the free end of the sub-blade is connected with a sub-blade enclosure, the sub-vane enclosure has a square structure, and a plurality of the sub-blades are circumferentially distributed on an outer wall of the second inlet shaft tube.

Preferably, the hollow blade and the auxiliary blade are both arranged in a "J" shape or an "S" shape.

Preferably, the liquid discharge direction of the spray seam is the same as the inclined direction of the stirring work surface of the main board.

Preferably, the connecting elbow is an arc-shaped elbow at 90°, and an outer arc connecting the elbow intersects an outer circle of the outer rotating body.

With this design, the liquid coming in from the inlet pipe can smoothly enter the outer rotating body in the tangential direction.

The invention also provides a control method for a drilling fluid mixing cleaning stirring device, the technical proposal of which is:

A control method for a drilling fluid mixing cleaning agitation device, comprising a control method of a stirring function, a control method of a mixing function, and a control method of a cleaning function.

Preferably, the control method of the stirring function, the control method of the mixing function, and the control method of the cleaning function are fully automatic control methods, wherein:

The control method of the stirring function specifically includes the following steps: the operator presses the stirring button, the system opens the mixing transmission valve, and the system automatically starts the motor after the valve is fully opened, and the motor drives the impeller to rotate counterclockwise, and the lower blade surface of the blade works. The liquid presents a swirling liquid flow. After the impeller rotates stably, the system closes the valve of the mixing conveyor. At this time, the valve is in agitation state, the agitation is completed, the operator presses the stop button, the system turns off the motor, and the stirring function is completed.

Stirring function: When the drilling fluid needs to be stirred, in order to reduce the axial force of the impeller, the flow direction of the impeller after the rotation of the impeller is a swirling liquid flow, and the direction of the liquid ejected by the jet is the same as the inclination direction of the impeller. The reaction force after the liquid is sprayed makes the lower surface of the impeller blade a working surface, and when the motor rotates to drive the impeller, the lower surface of the impeller blade is also designed as the working surface, and the liquid sprayed from the spray not only disperses the lower part of the impeller. The drilling fluid is in a suspended state, and the liquid sprayed by the spray nozzle gives the impeller a rotational force to reduce the torque of the motor starting and assist the rotation of the motor. The running function of the stirring function is: first, the mixing transmission valve is opened, the drilling fluid enters the impeller shaft tube and is ejected from the nozzle of the shaft tube, and the drilling of the liquid is discharged because the direction of the ejection slot is the same as the direction in which the impeller blades are inclined. The liquid causes the drilling fluid at the lower end of the impeller to be dissipated and is in a suspended state. Under the reaction force of the ejected liquid, the impeller blade is under the working surface, and then the motor is started to drive the impeller to rotate, and the motor drives the impeller to rotate the liquid to the tank. At the bottom, the drilling fluid forms a swirling liquid flow, and the drilling fluid sprayed by the spray seam has the same direction as the drilling fluid of the swirling liquid flow, accelerates the flow of the drilling fluid and gives the impeller a rotational force to assist the impeller to rotate, and the impeller rotates smoothly. After that, the hybrid transmission valve is closed and the device is in this operating state until the agitation function is manually turned off.

The control method of the mixing function specifically includes the following steps: the operator presses the mixing button, the system opens the hybrid transmission valve, and the system automatically starts the motor after the valve is fully opened. At this time, the motor drives the impeller to rotate counterclockwise, and the lower blade of the blade is the working surface. The liquid presents a swirling liquid flow. At this time, it is in a mixed state. After the mixing is completed, the operator presses the stop button, and the system closes the mixing transmission valve and the motor to complete the mixing function.

Mixing function: The mixing function is to add weight (dilution) to the drilling fluid by the auxiliary weighting system. In order to reduce the axial force of the impeller and the torque of the impeller, the liquid flow is selected as a swirling liquid flow. When the weight is increased, the valve of the hybrid transmission device and the output line of the weighting system are directly connected. When the weighting operation is performed, the mixing transmission valve is first opened, and the drilling fluid transported by the system output pipeline is added to the impeller shaft tube and sprayed from the shaft tube. When the spray is sprayed in the same direction as the impeller blade is inclined, the underside of the impeller blade is the working surface under the reaction force of the ejected liquid, and then the motor is started to drive the impeller to rotate, and the motor drives the impeller to rotate the liquid to the tank. The bottom is such that the liquid in the tank forms a swirling liquid flow, and the liquid ejected from the spout is in the same direction as the drilling fluid of the swirling liquid flow, accelerating the flow of the liquid in the tank and giving the impeller a rotational force to assist the impeller to rotate, accelerating the liquid The flow speeds up the mixing of the liquid until the weighting operation is completed. When the mixing is completed, it is only necessary to close the valve of the mixing transmission, and the impeller is still in a state of agitation until the motor is stopped.

The control method of the cleaning function specifically includes the following steps: the operator presses the cleaning button, the system automatically turns on the motor, and the motor drives the impeller to rotate clockwise. After the impeller rotates smoothly, the system opens the mixing transmission valve, and the cleaning function is cleaned. When the operator presses the stop button, the system closes the hybrid transmission valve and the motor to complete the cleaning function.

Cleaning function: The cleaning function is used for the final cleaning of the tank. At this point, the drilling fluid in the tank has been basically discharged, and only the sand at the bottom of the tank is left in the tank, and the impeller is basically in a suspended state. In order to increase the jet impact effect of the liquid, the rotation of the impeller is the same as the direction in which the jet is ejected, that is, if there is liquid in the tank at this time, the upper surface of the impeller vane is the working surface, and the impeller rotates to make the liquid appear as a fountain. Body fluid flow. When it is necessary to clean the bottom of the tank, first connect the clean water pipeline with the mud gun pipeline or the weighted output pipeline to start the motor. The motor drives the impeller to rotate. After the impeller rotates smoothly, the hybrid transmission valve opens the clear water, and the clean water can be used not only. The grit in the impingement tank is cleaned when the clean water flows in the mud gun line or the weighted output line, and the grit in the mud gun line and the weighted output line is cleaned, and the clean water is ejected from the jet seam due to the liquid. The direction of the jet is the same as the direction of the impeller rotation. The impeller rotation enhances the impact of the jetted liquid column, which effectively impacts the grit of the tank bottom. The grit is continuously impacted and carried away by the water stream. Thereby effectively cleaning the sand at the bottom of the tank.

The above mixing function, mixing function, and cleaning function can be switched to each other. If the mixing function is turned on in the stirring function, the operator only needs to press the mixing button, and the system will switch to the mixing function according to the corresponding program.

Preferably, the control method of the stirring function, the control method of the mixing function, and the control method of the cleaning function are semi-automatic control methods, and specifically include the following steps:

The stirring function, the mixing function and the cleaning function are nothing more than controlling the forward and reverse rotation of the motor and the cooperation with the valve of the hybrid transmission, separating the positive and negative control of the motor and the switching control of the valve of the hybrid transmission, and setting the mixing and mixing to one. Button, control motor reversal, clean set to a button, control motor forward rotation, then the valve switch is set to two three-position knob, control valve switch, through the combination of man and machine to achieve mixing, mixing, cleaning function .

Preferably, the method further comprises the following steps: manually setting a manual disk on the other end of the motor or the gearbox, and driving the motor tail or the gearbox worm to rotate by the manual disk, thereby driving the impeller to rotate.

The beneficial effects of the invention are:

1. The invention is beneficial to the entry of liquid in the forward rotation and the reverse rotation of the inner rotating body, and performs a preliminary shearing action on the liquid, the liquid feeding effect is good, and the mixing effect is good.

2. When the inner rotating body and the outer rotating body are stuck, the fixing bolt can be removed, and the outer rotating body is separated from the upper end cover or the outer rotating body and the lower end cover by the screw hole, thereby removing the steel ball from the steel. The direct removal in the ball slot effectively solves the problem that the entire hybrid transmission device is scrapped after the steel ball is stuck.

3. The invention opens the spray seam on the liquid inlet shaft tube, and changes the way of setting the nozzle in the past, so that the effect of cleaning the sand sink can be better achieved, and in addition, the set nozzle is easily caught in the sand in the bottom of the tank body, so that The torque required for the rotation of the impeller is increased, resulting in waste of energy. The spray joint is provided with a hole directly in the inlet shaft tube, so that the drilling fluid injection impeller can be easily operated without increasing the torque.

4. The stirring effect of the drilling fluid of the invention realizes the automatic removal of the grit in the tank body, enhances the effect of sand cleaning, reduces the input of labor cost, and at the same time reduces the torque of the impeller during mixing, thereby reducing the motor's Power saves energy.

5. The present invention sets the main blade and the sub-blade to a "J" shape or an "S" shape, which further enhances the strength of the blade and improves the stability of the overall operation of the device.

DRAWINGS

1 is a schematic view showing the overall structure of a drilling fluid mixing cleaning and agitating device according to Embodiment 1 of the present invention;

2 is a schematic view showing the overall structure of a hybrid transmission device according to Embodiment 1 of the present invention;

Figure 3 is a plan view of the hybrid transmission device according to Embodiment 1 of the present invention;

Figure 4 is a cross-sectional view of the hybrid transmission device according to Embodiment 1 of the present invention;

Figure 5 is a longitudinal sectional view of the hybrid transmission device according to Embodiment 1 of the present invention;

Figure 6 is an enlarged view of a portion A in Figure 5;

Figure 7 is a longitudinal sectional view showing a hybrid transmission device according to Embodiment 2 of the present invention;

8 is a schematic structural view of a stirring rod according to Embodiment 3 of the present invention;

9 is a schematic structural view of a stirring rod according to Embodiment 4 of the present invention;

Figure 10 is a side view of the blade shroud according to Embodiment 4 of the present invention.

Reference mark:

1, the base; 2, explosion-proof motor; 3, gearbox; 4, hybrid transmission; 5, stirring rod; 6, inlet pipe; 7, rotating mechanism; 8, spray port; 9, inner rotating body; External rotating body; 11, mounting hole; 12, first liquid inlet; 13, second liquid inlet; 14, cavity; 15, connecting elbow; 16, upper steel ball seat; 17, lower steel ball slot Seat; 18, steel ball groove; 19, steel ball; 20, upper steel ball groove gland; 21, first mount; 22, lower steel ball groove gland; 23, oil pipe; 24, upper bearing seat; Lower bearing seat; 26, bearing; 27, upper bearing gland; 28, upper bearing cap; 29, lower bearing gland; 30, second mount; 31, first inlet shaft tube; 32, blade; , blade coaming; 34, second liquid inlet pipe; 35, hollow blade; 36, auxiliary blade; 37, auxiliary blade coaming; 38, spray seam.

detailed description

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1

As shown in FIG. 1 to FIG. 6, a drilling fluid mixing and cleaning stirring device comprises a base 1, a driving transmission mechanism and an inlet stirring mechanism, and the driving transmission mechanism comprises an explosion-proof motor 2 fixedly mounted on the upper surface of the base 1. And the gearbox 3, the output end of the explosion-proof motor 2 is connected to the input end of the gearbox 3, and the output end of the gearbox 3 is connected to the input end of the liquid inlet stirring mechanism through the base 1.

The liquid inlet stirring mechanism includes a mixing transmission 4 including a liquid inlet pipe 6, a rotation mechanism 7, and a liquid discharge pipe, and the discharge mechanism 7 includes an inner rotating body 9 and an outer rotating body 10. The inner rotating body 9 and the outer rotating body 10 are rotatably connected by a steel ball 19, and a mounting hole 11 for connecting an output end of the gearbox 3 is provided at a top of the inner rotating body 9, and the outer rotating body 10 a plurality of first liquid inlets 12 are opened, and the first liquid inlets 12 communicate with the liquid inlet pipe 6 through a connecting elbow 15 which is a curved elbow of 90°, and The outer arc connecting the elbow 15 intersects with the outer circle of the outer rotating body 10. With this design, the liquid entering the liquid inlet pipe 6 can smoothly enter the outer rotating body 10 in the tangential direction, the inner rotation A plurality of second liquid inlets 13 are uniformly formed on the side wall of the body 9, and the liquid inlet efficiency in the inner rotating body 9 can be enhanced. The outer side wall of the inner rotating body 9 and the inner side wall of the outer rotating body 10 are provided with an empty space. The cavity 14 further increases the rate of liquid in the inner rotating body 9, thereby increasing the rate of mixing and stirring. The second liquid inlet 13 has a truncated cone shape, and the small opening end of the second liquid inlet 13 faces the outer side of the inner rotating body 9, and the axis of the second liquid inlet 13 intersects the axis of the inner rotating body 9, and the inner rotating body 9 The lower end is fixedly connected to the liquid discharge pipe, and the liquid discharge pipe is connected to the stirring rod 5 through a flange.

The top and bottom of the outer rotating body 10 are respectively provided with an upper steel ball socket seat 16 and a lower steel ball socket seat 17, and the inner side wall of the upper steel ball socket seat 16 and the inner side wall of the lower steel ball socket seat 17 are respectively A steel ball groove 18 is opened, and the steel ball groove 18 on the upper steel ball socket 16 extends to the top surface of the upper steel ball socket 16, and the steel ball groove 18 on the lower steel ball socket 17 extends to the lower A steel ball 19 is mounted on the bottom surface of the steel ball groove seat 17, and the inner rotating body 9 and the outer rotating body 10 are rotatably connected by the steel ball 19, and the upper end of the upper steel ball socket 16 The upper steel ball slot gland 20 is connected to the upper steel ball socket seat 16 by bolts, and the upper end of the upper steel ball groove gland 20 is detachably fastened with the first mounting seat 21. The lower end of the lower steel ball socket seat 17 is provided with a lower steel ball groove gland 22, and the lower steel ball groove gland 22 and the lower steel ball socket seat 17 are connected by bolts.

Upper steel ball socket 16 and lower steel ball socket 17 are respectively disposed at the top and bottom of the outer rotating body 10, and the steel ball groove 18 on the upper steel ball socket 16 and the lower steel ball socket 17 respectively extend to the upper steel ball socket The top surface of the 16 and the bottom surface of the lower steel ball bearing seat 17 are respectively provided with a steel ball groove gland 20 and a lower steel ball groove gland 22 on the upper steel ball groove seat 16 and the lower steel ball groove seat 17, and are passed through bolts Fixed, when the inner rotating body 9 and the outer rotating body 10 are stuck, the fixing bolt can be removed, and the upper steel ball groove seat 16 and the upper steel ball groove gland 20 or the lower steel ball groove seat 17 and the lower steel are fixed. The ball groove gland 22 is separated, and the steel ball 19 is exposed, so that the steel ball 19 can be taken out directly from the steel ball groove 18, which effectively solves the problem that the steel ball 19 cannot be taken out after being stuck, and the entire hybrid transmission device 4 is scrapped. The problem.

An oil pipe 23 communicating with the steel ball groove 18 is provided on the outer side wall of the outer rotating body 10, and lubricating oil can be injected into the steel ball groove 18 to lubricate the steel ball 19 in the steel ball groove 18 to facilitate the inner rotating body 9 Relative rotation between the outer rotating body 10.

When the drilling fluid mixing and cleaning stirring device of the present invention is in operation, the rotational torque of the inner rotating body 9 is input from the explosion-proof motor 2 and the gearbox 3 on the base 1 through the mounting hole 11 at the top of the inner rotating body 9, and the inner rotating body 9 can pass The steel ball 19 or the bearing 26 rotates in the outer rotating body 10, and the liquid enters the outer rotating body 10 from the inlet pipe 6 through the connecting elbow 15, and the inner rotating body 9 rotates inside while rotating in the outer rotating body 10. The liquid input from the body 10 can enter the inside of the inner rotating body 9 from the second liquid inlet 13 of the inner rotating body 9, and the second liquid inlet 13 of the inner rotating body 9 is a trough-shaped liquid inlet, and the second inlet The small opening end of the liquid port 13 faces the outer side of the inner rotating body 9, the axis of the second liquid inlet 13 intersects the axis of the inner rotating body 9, the inner rotating body 9 has a certain thickness, and the second liquid inlet 13 has a truncated cone structure. The annular inlet edge of the second inlet 13 forms an annular sharp edge structure, which can play a role in the drilling fluid, and can accelerate the flow of the drilling fluid, and can also carry out large particles in the drilling fluid. Shearing, mixing, and, because of the formation of a ring The sharp edge structure, whether the inner rotating body 9 rotates clockwise or counterclockwise, facilitates the entry of external liquid into the interior, and can all shear the liquid. The above structure can effectively improve the liquid mixing. effect.

Example 2

As shown in FIG. 7 , on the basis of the embodiment 1, the inner rotating body 9 and the outer rotating body 10 can also be rotatably connected by a bearing 26, specifically: the top and bottom of the outer rotating body 10 respectively An upper bearing housing 24 and a lower bearing housing 25 are disposed, and the upper bearing housing 24 and the lower bearing housing 25 are each provided with a bearing 26, and the inner rotating body 9 and the outer rotating body 10 are rotatably connected by the bearing 26, The upper end of the bearing block 24 is provided with an upper bearing gland 27, and the upper bearing gland 27 is connected to the upper bearing block 24 by bolts. The upper end of the upper bearing gland 27 is detachably fastened with a second mounting seat 30, An upper bearing pressure cap 28 is disposed between the upper bearing gland 27 and the inner rotating body 9, and the upper bearing pressure cap 28 is rotatably sleeved on the inner rotating body 9 and above the bearing 26; the lower bearing seat The lower end of 25 is provided with a lower bearing gland 29, which is connected by bolts to the lower bearing block 25.

The working principle is the same as that when the steel ball 19 is used.

Example 3

As shown in FIG. 8, the embodiment is based on the first embodiment, the stirring rod 5 includes a first liquid inlet shaft tube 31, and the first liquid inlet shaft tube 31 is mounted with eight sets of impellers, and the first liquid inlet shaft tube 31 The nozzle wall is uniformly provided with a plurality of spray slits 38. The angle between the liquid discharge direction of the spray slit 38 and the axial direction of the first liquid inlet shaft tube 31 is an acute angle, and the impeller includes one end fixed to the first liquid inlet shaft tube. The blade 32 on the outer wall 31, the free end of the blade 32 is connected with a blade shroud 33, which has a square structure.

The eight sets of blades 32 are symmetrically distributed on the outer wall of the first inlet shaft tube 31, and the vanes 32 are arranged in a "J" shape or an "S" shape.

A blade shroud 33 is added to the free end edge of the blade 32. During the operation of the impeller, the blade shroud 33 can enhance the upward or downward conveying ability of the drilling fluid, and enhance the mixing ability during the stirring process; meanwhile, the blade 32 is The "J" type or the "S" type is set to further enhance the strength of the blade 32 and improve the stability of the overall operation of the device.

By setting the spray seam 38, the way of setting the nozzle in the past is changed, and the effect of cleaning the sand sink can be better achieved. In addition, the nozzle provided is easily caught in the grit at the bottom of the tank body, so that the torque required for the impeller to rotate increases, resulting in The energy is wasted, and the provided spray seam 38 is directly opened on the first liquid inlet shaft tube 31, so that the operation of the drilling liquid seam spray impeller can be easily realized without increasing the torque; The direction forms an acute angle with the tangential direction of the first inlet shaft tube 31 at the position of the spray slit 38, thus ensuring that the spray slit 38 has a certain inclination angle on the horizontal surface when the liquid is discharged, and is started when the device performs the stirring work. The spray 38 sprays the liquid, and the spray 38 sprays a certain reaction force to assist the driving of the first liquid inlet tube 31 to rotate in the opposite direction, thereby improving the starting efficiency of the stirring function of the device, and at this time, the spray 38 discharges the liquid. The direction is the same as the direction in which the impeller blades 32 are inclined, and the lower surface of the impeller blades 32 is the working surface. The impeller blades 32 press the liquid against the bottom of the tank, so that the drilling fluid forms a swirling liquid flow, reducing the torque of the impeller; When the mixing function is implemented, the direction in which the spray 38 ejects the liquid is the same as the direction in which the impeller blades 32 are inclined, the lower surface of the impeller blades 32 is the working surface, and the impeller blades 32 press the liquid against the bottom of the tank to form a swirling liquid of the drilling fluid. The flow reduces the torque of the impeller; when the device performs the cleaning function, there is no drilling fluid in the tank at this time, the valve of the mixing transmission 4 is opened and the first inlet shaft tube 31 is activated, at which time the spray 38 is ejected. The liquid forms a covering surface, which increases the cleaning area of the bottom of the tank, and greatly improves the cleaning effect. At this time, the direction of rotation of the impeller is consistent with the direction in which the liquid is ejected from the spray slit 38, further enhancing the impact force of the liquid ejected by the spray slit 38. The deposition of the bottom of the tank is maximized and cleaned. In the patent, the spray 38 of the impeller 38 of the spray seam 38 has the same inclination direction as the impeller, and the working condition is that the liquid exhibits a swirling liquid flow during the stirring function, mixing The liquid presents a swirling liquid flow, and the liquid presents a fountain-like liquid flow during cleaning. Such a design can reduce the torque of the impeller, thereby reducing the power saving energy of the motor; The upper edge of the inner hole is higher than the upper edge of the outer hole, and the lower edge of the inner hole is higher than the lower edge of the outer hole, so that a downward inclined surface is formed at the slit 38, which can be enhanced The downward impact of the spray seam 38 further enhances the efficiency of cleaning the grit.

Example 4

As shown in FIG. 9 and FIG. 10, on the basis of the embodiment 1, the stirring rod 5 includes a second liquid inlet shaft tube 34, and the second liquid inlet shaft tube 34 is evenly mounted with four sets of hollow impellers, and the second The inlet shaft tube 34 is in communication with the hollow impeller. The hollow impeller includes a hollow blade 35 fixed at one end to the outer wall of the second inlet shaft tube 34. The free end of the hollow blade 35 is connected with a blade shroud 33, and the lower portion of the hollow blade 35 is opened. The liquid discharge port 8 which coincides with the inclination direction of the hollow impeller has a strip-shaped opening corresponding to the liquid discharge port 8 on the blade shroud 33, and the four sets of hollow blades 35 are symmetrically distributed on the outer wall of the second liquid inlet shaft tube 34. .

The second inlet shaft tube 34 is evenly mounted with four sets of auxiliary impellers, and the auxiliary impeller is disposed above the hollow impeller. The auxiliary impeller includes a sub-blade 36 whose one end is fixed on the outer wall of the second inlet shaft tube 34, and the sub-blade 36 is free. The sub-blade enclosure 37 is connected to the end, the sub-vane enclosure 37 has a square structure, and the four sub-blades 36 are symmetrically distributed on the outer wall of the second inlet shaft tube 34.

Both the hollow blade 35 and the sub-blade 36 are provided in a "J" type or "S" type.

Example 5

A control method for a drilling fluid mixing cleaning agitation device, comprising a control method of a stirring function, a control method of a mixing function, and a control method of a cleaning function, wherein:

The control method of the stirring function, the control method of the mixing function, and the control method of the cleaning function are fully automatic control methods, wherein:

Cleaning function: The cleaning function is used for the final cleaning of the tank. At this point, the drilling fluid in the tank has been basically discharged, and only the sand at the bottom of the tank is left in the tank, and the impeller is basically in a suspended state. In order to increase the jet impact effect of the liquid, the rotation of the impeller is the same as the direction in which the jet is ejected, that is, if there is liquid in the tank at this time, the upper surface of the impeller vane is the working surface, and the impeller rotates to make the liquid appear as a fountain. Body fluid flow. When it is necessary to clean the bottom of the tank, first connect the clean water pipeline with the mud gun pipeline or the weighted output pipeline to start the motor. The motor drives the impeller to rotate. After the impeller rotates smoothly, the mixing transmission valve opens the clear water, and the clean water can be used not only. The grit in the impingement tank is cleaned when the clean water flows in the mud gun line or the weighted output line, and the grit in the mud gun line and the weighted output line is cleaned, and the clean water is ejected from the jet seam due to the liquid. The direction of the jet is the same as the direction of the impeller rotation. The impeller rotation enhances the impact of the jetted liquid column, which effectively impacts the grit of the tank bottom. The grit is continuously impacted and carried away by the water stream. Thereby effectively cleaning the sand at the bottom of the tank.

Example 6

The embodiment is based on the embodiment 5, the control method of the stirring function, the control method of the mixing function and the control method of the cleaning function are semi-automatic control methods, and specifically include the following steps:

Example 7

The embodiment further includes the function of manually rotating the impeller according to the

embodiment

5 or 6, specifically comprising the steps of: setting a manual disk on the other end of the motor or the gearbox, and driving the motor tail or the gearbox worm through the manual disk Rotate, which in turn drives the impeller to rotate.

The above-mentioned embodiments are merely illustrative of specific embodiments of the invention, and the description thereof is not to be construed as limiting the scope of the invention. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims

A drilling fluid mixing and cleaning stirring device, comprising: a base, a driving transmission mechanism and an inlet stirring mechanism, wherein the driving transmission mechanism comprises an explosion-proof motor and a gearbox fixedly mounted on an upper surface of the base, the explosion-proof motor The output end is connected to the input end of the gearbox, and the output end of the gearbox is connected to the input end of the liquid inlet stirring mechanism through the base;

The liquid inlet stirring mechanism includes a mixing transmission device and a stirring rod, the mixing transmission device includes an inlet pipe, a rotating mechanism and an outlet pipe, and the rotating mechanism includes an inner rotating body and an outer rotating body, and the inner rotating body and The outer rotating body is rotatably connected by a steel ball or a bearing, and a top of the inner rotating body is provided with a mounting hole for connecting an output end of the gearbox, and the outer rotating body is provided with a plurality of first liquid inlets, a liquid inlet is connected to the liquid inlet pipe through a connecting elbow, and a plurality of second liquid inlets are evenly opened on the side wall of the inner rotating body, and the outer side wall of the inner rotating body and the inner side wall of the outer rotating body a cavity is provided, the second liquid inlet is a truncated cone structure, and a small opening end of the second liquid inlet port faces an outer side of the inner rotating body, and an axis of the second liquid inlet port intersects an axis of the inner rotating body, The lower end of the rotating body is fixedly connected to the liquid discharge pipe, and the liquid discharge pipe is connected to the stirring rod through a flange.
The drilling fluid mixing and cleaning agitation device according to claim 1, wherein the top and bottom of the outer rotating body are respectively provided with an upper steel ball socket seat and a lower steel ball socket seat, and the upper steel ball socket seat A steel ball groove is defined on the inner side wall of the inner side wall and the lower steel ball seat, and the steel ball groove on the upper steel ball seat extends to the top surface of the upper steel ball seat, and is located on the lower steel ball seat a steel ball groove extending to a bottom surface of the lower steel ball groove seat, wherein the steel ball groove is mounted with a steel ball, and the inner rotating body and the outer rotating body are rotatably connected by the steel ball, and the upper end of the upper steel ball groove seat The upper steel ball groove gland is connected with the upper steel ball groove seat by bolts, and the upper end of the upper steel ball groove gland is detachably fastened with the first mounting seat, the lower The lower end of the steel ball groove seat is provided with a lower steel ball groove gland, and the lower steel ball groove gland is connected with the lower steel ball groove seat by bolts.
The drilling fluid mixing and cleaning agitating device according to claim 2, wherein the outer side wall of the outer rotating body is provided with an oil pipe communicating with the steel ball groove.
The drilling fluid mixing and cleaning agitating device according to claim 1, wherein the top and the bottom of the outer rotating body are respectively provided with an upper bearing seat and a lower bearing seat, wherein the upper bearing seat and the lower bearing seat are respectively provided a bearing, the inner rotating body and the outer rotating body are rotatably connected by the bearing, an upper bearing gland is disposed at an upper end of the upper bearing seat, and the upper bearing gland and the upper bearing seat are connected by bolts, the upper bearing The upper end of the gland is detachably fastened with a second mounting seat, and an upper bearing pressing cap is disposed between the upper bearing gland and the inner rotating body, and the upper bearing pressing cap is rotatably sleeved on the inner rotating body and located at the bearing The lower end of the lower bearing housing is provided with a lower bearing gland, and the lower bearing gland is connected to the lower bearing housing by bolts.
The drilling fluid mixing and cleaning stirring device according to claim 1, wherein the stirring rod comprises a first liquid inlet shaft tube, and the first liquid inlet shaft tube is mounted with a plurality of groups of impellers, and the first liquid inlet shaft A plurality of spray slits are uniformly formed on the pipe wall of the pipe, and an angle between the liquid discharge direction of the spray slit and the axial direction of the first liquid inlet pipe pipe is an acute angle.
The drilling fluid mixing and cleaning agitation device according to claim 5, wherein the impeller comprises a blade fixed at one end to an outer wall of the first inlet shaft tube, and a free end of the blade is connected with a blade coaming plate. The blade shroud has a square structure.
The drilling fluid mixing cleaning and agitating device according to claim 6, wherein a plurality of said blades are evenly distributed on the outer wall of said first inlet shaft tube in a circumferential direction, and said blades are of "J" type or "S" type. Settings.
The drilling fluid mixing and cleaning stirring device according to claim 1, wherein the stirring rod comprises a second liquid inlet shaft tube, and the second liquid inlet shaft tube is evenly mounted with a plurality of sets of hollow impellers, and the second inlet a liquid shaft tube communicating with the hollow impeller, the hollow impeller including a hollow blade fixed at one end to an outer wall of the second inlet shaft tube, the free end of the hollow blade being connected with the blade coaming, the hollow blade The lower portion is provided with a liquid discharge port which coincides with the inclination direction of the hollow impeller, and the plurality of hollow blades are evenly distributed on the outer wall of the second liquid inlet shaft tube in the circumferential direction.
The drilling fluid mixing and cleaning agitation device according to claim 8, wherein the second inlet shaft tube is uniformly mounted with a plurality of sets of auxiliary impellers, and the secondary impeller is disposed above the hollow impeller, The auxiliary impeller includes a sub-blade fixed at one end to the outer wall of the second inlet shaft tube, the free end of the sub-blade is connected with a sub-blade enclosure, the sub-vane enclosure has a square structure, and the sub-blades are evenly distributed along the circumference. On the outer wall of the second inlet shaft tube.
The drilling fluid mixing cleaning and agitating device according to claim 9, wherein the hollow blade and the secondary blade are both disposed in a "J" shape or an "S" shape.
The drilling fluid mixing and cleaning agitation device according to claim 1, wherein the connecting elbow is an arc-shaped elbow of 90°, and an outer arc connecting the elbow intersects an outer circle of the outer rotating body. .
A control method for a drilling fluid mixing and cleaning stirring device, comprising: a control method of a stirring function, a control method of a mixing function, and a control method of a cleaning function.
The control method of the drilling fluid mixing and cleaning stirring device according to claim 12, wherein the control method of the stirring function, the control method of the mixing function, and the control method of the cleaning function are fully automatic control methods, wherein:

The control method of the stirring function specifically includes the following steps: the operator presses the stirring button, the system opens the mixing transmission valve, and the system automatically starts the motor after the valve is fully opened, and the motor drives the impeller to rotate counterclockwise, and the lower blade surface of the blade works. The liquid presents a swirling liquid flow. After the impeller rotates stably, the system closes the valve of the mixing conveyor. At this time, the valve is in agitation state, the agitation is completed, the operator presses the stop button, the system turns off the motor, and the stirring function is completed;

The control method of the mixing function specifically includes the following steps: the operator presses the mixing button, the system opens the hybrid transmission valve, and the system automatically starts the motor after the valve is fully opened. At this time, the motor drives the impeller to rotate counterclockwise, and the lower blade of the blade is the working surface. The liquid presents a swirling liquid flow. At this time, it is in a mixed state. After the mixing is completed, the operator presses the stop button, and the system closes the mixing transmission valve and the motor to complete the mixing function;

The control method of the cleaning function specifically includes the following steps: the operator presses the cleaning button, the system automatically turns on the motor, and the motor drives the impeller to rotate clockwise. After the impeller rotates smoothly, the system opens the mixing transmission valve, and the cleaning function is cleaned. When the operator presses the stop button, the system closes the hybrid transmission valve and the motor to complete the cleaning function.
The control method of the drilling fluid mixing and cleaning stirring device according to claim 12, wherein the control method of the stirring function, the control method of the mixing function, and the control method of the cleaning function are semi-automatic control methods, specifically including the following steps :

Separate the positive and negative control of the motor and the switch control of the valve of the hybrid transmission. Set the mixing and mixing to a button to control the reverse of the motor. The cleaning is set to a button to control the forward rotation of the motor. Then the switch of the valve is set to Two-position three-position knob, which controls the switch of the valve, realizes the mixing, mixing and cleaning functions through the combination of man and machine.
The method for controlling a drilling fluid mixing and cleaning agitating device according to claim 12, further comprising the function of manually rotating the impeller, specifically comprising the steps of: setting a manual disk on the other end of the motor or the gearbox, by manual The disk drives the tail of the motor or the gearbox worm to rotate, which in turn drives the impeller to rotate.